/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassEntityManager.h
Copies values from FragmentInstanceList over to fragments of given entities collection. The caller is responsible for ensuring that the given entity archetype (FMassArchetypeEntityCollection.Archetype) does have given fragments. Failing this assumption will cause a check-fail.
static void BatchSetEntityFragmentsValues ( const [FMassArchetypeEntityCollection](API\Plugins\MassEntity\FMassArchetypeEntityCollection) & SparseEntities, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FInstancedStruct](API\Plugins\StructUtils\FInstancedStruct) > FragmentInstanceList )